The RFI Suppression of Phase Controlled Systems with Nonlinear Filters

Phase controlled systems (PCS) built with nonlinear inductor filters for radio frequency interference (RFI) suppression give irregularites in the radio noise spectrum. These irregularities are important for the measurement of the RFI behavior of the PCS and the design of RFI filters. A theory is given that explains the most important observed effects. It is shown that the theory leads to a more practical definition of the RFI suppression activity of the nonlinear inductor.